Three=dimensional optical monitoring of geometry of mirrored objects - illuminating scene using light sources of known geometry, acquiring reflected light source images and comparing with reference images

摘要

The monitoring involves illuminating the whole scene or a large part of it with one or more light sources of known geometry. The more or less curved surfaces of the objects in the scene act as mirrors. The mirror image of the light sources is acquired by one or more cameras and compared with that of a reference object. The light sources can be operated with constant intensity during the measurement process or can be switched on and off during a measurement procedure contg. several image acquisitions. USE/ADVANTAGE - For monitoring geometry and surface quality of reflective objects. Enables absolute measurement of coordinates of surface points of object.